EPPING — Aaron Desjardins has been charged with one count of first-degree murder in the death of his ex-wife, Amanda “Amy” Warf.

Desjardins, of 67 Railroad Ave., was taken into custody Tuesday afternoon, according to an announcement released by New Hampshire Attorney General Michael A. Delaney, New Hampshire State Police Col. Robert C. Quinn and Exeter Police Chief Richard Kane.

Warf, a Hampton mother, was found dead inside an abandoned concrete plant in Exeter last week. Her remains were located by firefighters after the building caught fire in the morning.

Warf died from incised wounds to her neck, according to the state's chief medical examiner, who has ruled the death a homicide.

After seven years of marriage, Warf and Desjardins split in 2011, and their divorce was finalized in February 2012, according to court records. Warf was pregnant at the time, and the couple's young son was born two months after the divorce was finalized.

Desjardins remarried the same month, according to court records.

Desjardins appeared to emerge as a suspect in the murder case early on. His home was searched by homicide investigators both Sunday and Monday. Desjardins publicly proclaimed his innocence, telling Foster's on Sunday evening that he had nothing to do with his ex-wife's murder.

“I have been up front, honest and have opened my home and all of my belongings to the police to prove my innocence,” he said. “I think that says it all.”

WMUR-TV reported that two unmarked police cars returned to Desjardins' home on Tuesday afternoon, several hours before his arrest was announced. A family friend said Desjardins' wife was seen packing up personal items. Investigators were also seen taking a suitcase from the home, according to the television station.

Senior Assistant Attorney General Susan G. Morrell was not available for comment Tuesday evening.

Warf's body was recovered inside the second floor of an old building at 2 Hampton Road in Exeter on Thursday, March 7. The property shares a border with one of Exeter Hospital's administrative buildings on Holland Way.

Exeter Hospital has confirmed Warf was a longtime employee. Desjardins told Foster's earlier this week that Warf worked in the hospital's billing department before her death.

Warf also worked at Hair Excitement, a salon inside the Fox Run Mall in Newington, for several years, according to her former co-workers there.

New Hampshire State Police and the Exeter police and fire departments have participated in the homicide investigation. They have been joined by investigators from the state fire marshal's office and the Bureau of Alcohol, Tobacco, Firearms and Explosives.

Desjardins is scheduled to be arraigned in Exeter Circuit Court in Brentwood on Wednesday morning.